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Duplex-winding low location torque outer rotor permanent-magnet synchronous motor

A positioning torque and permanent magnet synchronization technology, which is applied to synchronous motors with stationary armatures and rotating magnets, magnetic circuit stationary parts, magnetic circuit shape/style/structure, etc., can solve the problem of restricting the application range of permanent magnet synchronous motors and other problems, to achieve the effect of simple structure, lower inherent positioning moment, and low cost

Inactive Publication Date: 2013-07-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-winding low-positioning torque outer rotor permanent magnet synchronous motor, in order to solve the inherent positioning torque of the existing permanent magnet synchronous motor, which restricts the low-speed performance and high-precision position control of the permanent magnet synchronous motor scope of application

Method used

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  • Duplex-winding low location torque outer rotor permanent-magnet synchronous motor
  • Duplex-winding low location torque outer rotor permanent-magnet synchronous motor
  • Duplex-winding low location torque outer rotor permanent-magnet synchronous motor

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specific Embodiment approach 1

[0009] Specific implementation mode one: as figure 1 , figure 2 , image 3 As shown, it is composed of the first winding 1, the second winding 2, the first set of inner stator poles 3, the second set of inner stator poles 4, the first bearing 5, the second bearing 6, the permanent magnet outer rotor yoke 7, the shell 8 composition;

[0010] The first winding 1 is embedded in the first set of inner stator poles 3, the second winding 2 is embedded in the second set of inner stator poles 4, and the first set of inner stator poles 3 and the second set of inner stator poles 4 are connected side by side with the same axis The left side of the inner hole of the first group of inner stator poles 3 is inlaid with the first bearing 5, and the right side of the inner hole of the second group of inner stator poles 4 is inlaid with the second bearing 6; the outer circular surface of the permanent magnet outer rotor yoke 7 is inlaid with The inner circular surface of the shell 8 is conn...

specific Embodiment approach 2

[0011] Specific implementation mode two: as figure 1 , figure 2 , image 3 As shown, the difference between this embodiment and the first embodiment lies in that the first group of inner stator poles 3 is misaligned relative to the second group of inner stator poles 4 , and the misalignment angle is 11 degrees. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: as figure 1 , figure 2 , image 3 As shown, the difference between this embodiment and the first embodiment lies in that the first group of inner stator poles 3 is misaligned relative to the second group of inner stator poles 4, and the misalignment angle is 11.5 degrees. Other compositions and connections are the same as in the first embodiment.

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Abstract

The invention relates to the technical field of permanent-magnet synchronous motors, in particular to a duplex-winding low location torque outer rotor permanent-magnet synchronous motor. In order to solve the problem that a natural location torque exists in an existing permanent-magnet synchronous motor, thus an application range of the permanent-magnet synchronous motor in control of low-speed performance and a high-precision position is limited A first gap and a second gap are arranged among the inner circle faces of permanent-magnet outer rotor yokes, an outer circle face of a first group of an inner stator magnetic pole and an outer circle face of a second group of an inner stator magnetic pole. A shaft on an outer shell is embedded into an inner hole of a first bearing and an inner hole of a second bearing, so that the permanent-magnet outer rotor yokes and the outer shell rotates relative to the first group of the inner stator magnetic pole and the second group of the inner stator magnetic pole in a concentric mode. The first group of the inner stator magnetic pole is dislocated relative to the annular phase of the second group of the inner stator magnetic poles, and the dislocation angle is 10-13 degrees. According to the duplex-winding low location torque outer rotor permanent-magnet synchronous motor, the inherent location torque of the permanent-magnet synchronous motor can be effectively reduced, the reduction margin is 25-30% of an inherent location torque of a traditional motor, and the duplex-winding low location torque outer rotor permanent-magnet synchronous motor has the advantage of being low in cost.

Description

technical field [0001] The invention relates to the technical field of permanent magnet synchronous motors. Background technique [0002] The positioning torque is an inherent phenomenon of the permanent magnet synchronous motor. It is the positioning torque that exists in the non-energized state of the permanent magnet synchronous motor and is related to the position. The positioning torque includes hysteresis positioning torque and reluctance positioning torque, mainly due to the stator The existence of cogging makes the motor reluctance uneven. [0003] The positioning torque directly produces fluctuating torque in the direct drive system, which has a great influence, especially on the low-speed performance and high-precision positioning of the position control system, thus restricting the low-speed performance and high-precision position control of the permanent magnet synchronous motor. application range. Contents of the invention [0004] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/22H02K1/14
Inventor 江善林徐永向胡建辉邹继斌刘承军李勇尚静王骞赵博赵猛
Owner HARBIN INST OF TECH